Cotton-gin brush



(No Model.) 2 SheetsSheet 1. W. M. & R. T. SWANN.

v COTTON GIN BRUSH. No. 403,973. Patented May 28, 1889.

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(1"10 Model.) 2 Sheets-Sheet 2. W. M. & R. T. SWANN.

COTTON GIN BRUSH. No. 403,973. Patented May 28, 1889.

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UNITED STATES PATENT OFFICE.

VARNER MINOR S'VVANN AND RICHARD TOMPKINS SVANN, OF DALLAS, TEXAS.

COTTON-GIN BRUSH.

SPECIFICATION forming part of Letters Patent No. 403,973, dated May 28, 1889.

Application filed January '7, 1889. Serial No. 295,683. (No model.)

To all whom zit may concern:

Be it known that we, VARNER MINOR SWANN and RICHARD TOMPKINS SWANN, both citizens of the United States, residing in Dallas, in the county of Dallas and State of Texas, jointly have invented certain new and useful Improvements in Cotton -Gin Brushes, of which the following is a specification.

The object of our invention is to produce a cheap, durable, effieient, and simple brush adapted for use in cotton-gins, the parts of which may readily be assembled or detached for purposes of construction, renewal, replacement, or repair.

The subjectmatter claimed is hereinafter specifically designated.

The accompanying drawings represent all our improvements as embodied in one apparatus. Some of the parts may be used without the others, and in apparatus varying somewhat in its details of construction from that herein shown.

Figure 1 represents a View of the brush in perspective; Fig. 2, a vertical longitudinal central section through one of the heads of the brush. Figs. 3 and i are broken end views showing modifications of the apparatus.

The drawings show heads l3 13 mounted on an axle or shaft, A, turning in bearings in the machine, in the usual way. These disks may be made of wood, metal, or other suitable material, but preferably of metal, and are fastened, keyed, or secured tightly upon the shaft in usual well-known ways, at suitable distances apart. Notches or recesses Z), preferably radial, parallel with the shaft, and equidistant from each other, are formed in the periphery of each of the heads, to receive brush-sticks C, which are inserted or keyed therein, so as to be securely held. These sticks may be made, as shown, either circular or polygonal in cross-section, and of the full length of the brush, and fitting in corresponding notches or recesses, 12, in the heads; or, in other words, their ends are flush with the outer faces of the disks or heads 13. Ve preferably, however, make the sticks C circular in cross-section, as shown in the drawings,

because by this construction, while the sticks may be moved longitudinally into the corre sponding openings in the heads ll and held in position, they are prevented from moving laterally toward and from the axis of the cylin der. These sticks are slotted longitudinally, which slots are by preference made radial to receive bristles or brushes 0, secured therein by clamping, gluing, or otherwise fastening them in well-known ways. One common way of making such brushes is to split the stick lengthwise and clamp the bristles or brushes .between the sections.

Longitudinal scores or slots (1 are made in each side of the sticks, preferably equidistant between their top and bottom, into which slightly-yielding elastic slats D, of a width about equal to that of the spaces between the sticks, are inserted by springing them in or otherwise securing them. These slats may be made of wood, paper, papier-mach, metal, or vulcanized fiber. They serve to bridge the spaces between the sticks, so as to complete the periphery of the brush, and to exclude dust, lint, or other matter which would tend to throw the brush out of balance or impede its working, and as the brush revolves rapidly this construction is important. It is obvious from the foregoing description that the parts of the brush are held securely while in operation, and yet can readily be removed or replaced, and its advantages in operation will be readily understood by those skilled in the art.

\Vhatis herein claimed as new, and desired to be secured by Letters Patent, is

1. The combination, substantially as heroinbefore set forth, of the heads 1;, having circular slots I), the longitudinal slotted circular brush-sticks, and the brushes or bristles therein.

2. The combination, substantially as herei 11- before set forth, of the slotted heads, the longitndinallyslotted brush sticks, carrying brushes or bristles and having the side slots therein, and the interposed slats D, secured thereto.

The improved cotton-gin brush hereiu before described, consisting of the combine: In testimony whereof We have hereunto tion of a central shaft, slotted heads mounted subscribed our names.

thereon, slotted brush-sticks connecting the .VVARNER MINOR SVANN.

' heads brushes secured in the sticks and H T T 5 slats closing the spaces between the sticks, RICHARD IOMPKDS SWANL' these members being and operating in com- Witnesses: bination substantially as hereinbefore set J. M. MCCORMICK, forth. A A. BLUST. 

